Numeral MCP by usefulapi
Server Details
Calculate sales tax & VAT, record transactions and refunds, manage products and customers.
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- Status
- Unhealthy
- Uptime
- 0.0% over the last 24 hours
- Last Tested
- Transport
- Streamable HTTP
- URL
- Repository
- m190/usefulapi-mcp
- GitHub Stars
- 0
- ChatGPT
- –
- Claude
- –
TDQS
Scored across 11 tools
Each tool has a clearly distinct resource and action (calculate tax, create/get customer, create/get/list product, create/get transaction, create/list refunds, ping). The descriptions explicitly clarify boundaries, such as calculate_tax being stateless versus create_transaction writing a live record. No two tools overlap in a way that would cause misselection.
All tools use the numeral_ prefix and snake_case, with a consistent verb_noun pattern for almost every operation. The lone exception is numeral_ping, which lacks a noun but is a conventional health-check name, making this a minor deviation rather than a real inconsistency.
11 tools is well-scoped for a tax/compliance API covering products, customers, transactions, refunds, tax calculation, and health checking. Each tool clearly earns its place without redundancy or bloat.
The set covers key create, get, and list operations for products, but lacks update/delete for customers, products, and transactions, and has no list_customers or list_transactions. These gaps could hinder agents needing to manage or discover records beyond creation and single-record retrieval.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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